Home / 343,538.15-515,239.41-115,811.23

Finding the Fourth Proportional to 343,538.15, 515,239.41 and 115,811.23

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Solution

The fourth proportional to 343,538.15, 515,239.41 and 115,811.23 is: 173,693.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,538.15 : 515,239.41 = 115,811.23 : x
  2. Step 2: Convert to fraction form
    343,538.15/515,239.41 = 115,811.23/x
  3. Step 3: Cross multiply
    343,538.15x = 515,239.41 × 115,811.23
  4. Step 4: Simplify right side
    343,538.15x = 59,670,509,816.57
  5. Step 5: Solve for x
    x = 59,670,509,816.57/343,538.15
  6. Step 6: Final answer
    x = 173,693.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.